From 6d10c17a31122cda3fd04398eb95be441f6d8f0c Mon Sep 17 00:00:00 2001
From: Jim Ingham <jingham@apple.com>
Date: Fri, 1 Jun 2012 01:03:40 +0000
Subject: [PATCH] Add an API to determine whether there are any characters on
 the current input line.

llvm-svn: 157789
---
 lldb/tools/driver/IOChannel.cpp | 11 +++++++++++
 lldb/tools/driver/IOChannel.h   |  3 +++
 2 files changed, 14 insertions(+)

diff --git a/lldb/tools/driver/IOChannel.cpp b/lldb/tools/driver/IOChannel.cpp
index 25274581efed..0ed6fd326794 100644
--- a/lldb/tools/driver/IOChannel.cpp
+++ b/lldb/tools/driver/IOChannel.cpp
@@ -50,6 +50,17 @@ IOChannel::GetPrompt ()
     return pos->second.c_str();
 }
 
+bool
+IOChannel::EditLineHasCharacters ()
+{
+    const LineInfo *line_info  = el_line(m_edit_line);
+    if (line_info)
+        return line_info->cursor != line_info->buffer;
+    else
+        return false;
+}
+
+
 void
 IOChannel::EraseCharsBeforeCursor ()
 {
diff --git a/lldb/tools/driver/IOChannel.h b/lldb/tools/driver/IOChannel.h
index e3c44b58d236..fbeaac4a8683 100644
--- a/lldb/tools/driver/IOChannel.h
+++ b/lldb/tools/driver/IOChannel.h
@@ -96,6 +96,9 @@ public:
     const char *
     GetPrompt ();
 
+    bool
+    EditLineHasCharacters ();
+    
     void
     EraseCharsBeforeCursor ();
 
-- 
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